Diamond, IL
Climate overview — based on NOAA 1991-2020 normals from CHANNAHON DRESDEN ISL DAM, IL US.
Year-round temperatures (°F)
Climate summary
Diamond has an annual average temperature of 51.1°F with about 37.2 inches of precipitation per year and 18.4 inches of snow. The warmest month is July (average high 84.9°F), and the coldest is January (average low 17.0°F). May is typically the wettest month (4.61 in) and February the driest (1.68 in). Snow typically falls from November through March.
Best time to visit Diamond
Full guide →Climate change signal
All-time records →0 of 366 (0%) of Diamond's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1940s | 0 | |
| 1950s | 0 | |
| 1960s | 0 | |
| 1970s | 8 | |
| 1980s | 0 | |
| 1990s | 66 | |
| 2000s | 206 | |
| 2010s | 86 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 31.6°F | 17.0°F | 24.3°F | 2.08 in | 6.4 in | 12 |
| February | 36.8°F | 20.3°F | 28.6°F | 1.68 in | 5.2 in | 10 |
| March | 47.7°F | 29.6°F | 38.6°F | 2.15 in | 0.4 in | 11 |
| April | 60.8°F | 39.6°F | 50.2°F | 3.78 in | — | 11 |
| May | 71.9°F | 50.7°F | 61.3°F | 4.61 in | — | 11 |
| June | 80.9°F | 60.3°F | 70.6°F | 4.50 in | — | 10 |
| July | 84.9°F | 65.0°F | 75.0°F | 3.85 in | — | 9 |
| August | 82.5°F | 63.3°F | 72.9°F | 3.75 in | — | 9 |
| September | 77.2°F | 55.6°F | 66.4°F | 3.25 in | — | 8 |
| October | 64.3°F | 44.0°F | 54.2°F | 3.09 in | — | 9 |
| November | 50.0°F | 33.0°F | 41.5°F | 2.52 in | 0.3 in | 10 |
| December | 37.2°F | 22.7°F | 29.9°F | 1.96 in | 6.1 in | 12 |
Climate twins of Diamond
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).